He makes four experiments in total.
He first puts coffee grounds in an acrylic pipe, and pours some water to "steam" them. In 3 minutes, he pours more water. Most of the coffee grounds float on water, indicating that they still have gas in them and are lighter than water. Watch the video at around 11:10.
He then puts coffee grounds in a Matsuya dripper, and steams it in the Matsuya way. In 3 minutes, almost all the coffee grounds sink under water, except waxy, water-repellent portions. See the video at around 22:45.
Thirdly, he uses Melita's 1x2 dripper. Watch the video at around 34:20. Most of the coffee grounds float on water. Fourthly, he uses Hario's cone-shaped dripper. Watch the video at around 51:20.
実験を全部で４つ行います。
まず、アクリルのパイプにコーヒーの粉を入れ、お湯を入れ、「蒸らし」をします。３分後、お湯をもっと入れます。大半のコーヒーの粉が水に浮きます。まだガスを含み、水より軽いことを示します。11:10あたりのビデオを見てください。
次にコーヒーの粉を松屋式のドリッパーに入れ、松屋式で蒸らしを行います。３分後、ろう質で水をはじく部分以外、ほとんどのコーヒーの粉は水に沈みます。22:45あたりのビデオを見てください。
三番目に、メリタの1x2ドリッパーを使います。34:20あたりのビデオを見てください。大半のコーヒーの豆は水に浮きます。四番目に、ハリオの円錐形のドリッパーを使います。51:20あたりのビデオを見てください。

If you ever attempt to make coffee in the Matsuya way, you are recommended to use Matsuya's original wire-frame dripper or make a similar dripper by yourself.
松屋式でコーヒーを淹れる場合は、松屋の金枠ドリッパーを使うか、または自分で似たようなドリッパーを作ることを薦めます。

2 comments:

Dan
said...

Hiroyuki,

This post is simply awesome and very clear and it really explains the benefits of using a matsuya type dripper/brewer ...No wonder coffee flavour oozes out ...I tried to replicate matsuya method in a french press before and I did not really like it ...This probably explains why ...Now I need to make me a matsuya type dripper or buy one ..Thanks again Hiroyuki for taking the time to educate us all ...